Storm warnings or advisories have been issued for 16 states Wednesday as the storm starts in the Gulf Coast and tracks along the East Coast Thursday and Friday.

Heavy snow is possible along the Interstate 95 corridor from Washington, D.C., to New York City, where an inch of snow could accumulate. Boston could see 1 to 2 inches while areas west of the city could see 3 inches or more.

Boston, which already had a nor'easter Tuesday, is expected to dip below freezing for the first time this season Wednesday with highs in the 30s on Wednesday and Thursday.

The nationwide forecast for the Thanksgiving holiday is looking much better as the nor'easter will clear out by Wednesday, the biggest travel day of the year. An estimated 54.3 million people will travel 50 miles or more, AAA reports. That's up 2.5 million from last year's estimate.

Road travelers can also expect heavy congestion in major cities.

Long-range forecasts show small-scale weather concerns in the days before Thanksgiving. There will be snow in some places, such as the Rockies, Northeast and Upper Midwest, but not enough to cause widespread travel disruptions.